I Googled it Guiseppe; just like you do .How do you work that out? We use roughly 1 billion barrels per fortnight.
Well in that case, seeing as I used 100million = 1 billion, what with being English an' all, that makes the store of oil (known about) even more.A billion is an American billion. One thousand million.
An English billion is a million millions. Are you really an engineer?
actually its not. Its a thousand millions and has been for a very long time. it originally came from france not england.